Reply To: sms Home Page › Forums › Network Management › ZeroShell › sms › Reply To: sms November 10, 2018 at 8:45 pm #64557 bortekParticipant I have the same issue. How did you solve this? In SMS settings I selected ttyUSB0 and I am using Huawei 4G modem connected to Raspberry pi where zeroshell is running.